a = "你好"
b = "我不好"
# +
a + b
print(a, b)
print('你好'  '不好')
c = '你好'  '不好'
# %
print('%s---%s' % (a, b))
# format
print("{}{}".format(a, b))
# f-string
print(f'{a}+{b}={a+b}')
print(a * 3)

name = '张三'
age = 25
s1 = f'姓名：{name}，年龄：{age}'
s2 = '姓名：' + name

# Ctrl + Q    帮助
